{"id":263,"date":"2020-08-26T00:56:55","date_gmt":"2020-08-25T17:56:55","guid":{"rendered":"https:\/\/chuahanghatinh.org\/?p=263"},"modified":"2023-07-23T16:43:50","modified_gmt":"2023-07-23T09:43:50","slug":"bi-mat-ton-tai-cua-su-song-trong-tu-nhien","status":"publish","type":"post","link":"https:\/\/www.chuahanghatinh.org\/?p=263","title":{"rendered":"B\u00ed m\u1eadt t\u1ed3n t\u1ea1i c\u1ee7a s\u1ef1 s\u1ed1ng trong t\u1ef1 nhi\u00ean"},"content":{"rendered":"
\n
\n
\n
\n
\n
\n
\n
\n
\n
\n

Trong t\u1ef1 nhi\u00ean, s\u1ef1 s\u1ed1ng \u0111\u01b0\u1ee3c t\u1ed3n t\u1ea1i t\u1eeb th\u1ebf h\u1ec7 n\u00e0y sang th\u1ebf h\u1ec7 kh\u00e1c d\u01b0\u1edbi h\u00ecnh th\u1ee9c b\u1ea3o t\u1ed3n c\u1ee7a \u0111a d\u1ea1ng sinh h\u1ecdc nh\u01b0 Tri\u1ebft h\u1ecdc Ph\u01b0\u01a1ng \u0110\u00f4ng \u0111\u00e3 ch\u1ec9 ra: Nh\u00e2n sinh do t\u1ed5. C\u00f9ng m\u1ed9t c\u00e1ch ti\u1ebfp c\u1eadn nh\u01b0 v\u1eady, ph\u1ea7n l\u1edbn c\u00e1c nghi\u00ean c\u1ee9u, c\u00e1c tri\u1ebft thuy\u1ebft kh\u00e1c nhau tr\u00ean th\u1ebf gi\u1edbi \u0111\u1ec1u \u0111i \u0111\u1ebfn m\u1ed9t k\u1ebft lu\u1eadn r\u1eb1ng, quy lu\u1eadt t\u1ed3n t\u1ea1i v\u00e0 b\u1ea3o t\u1ed3n c\u1ee7a t\u1ef1 nhi\u00ean \u0111\u01b0\u1ee3c hi\u1ec3u nh\u01b0 l\u00e0 t\u1eeb m\u1eb9 sinh con, con sinh ch\u00e1u, th\u1ebf h\u1ec7 n\u00e0y sinh ra th\u1ebf h\u1ec7 kia ti\u1ebfp n\u1ed1i nhau kh\u00f4ng ng\u1eebng trong qu\u00e1 tr\u00ecnh sinh di\u1ec7t. T\u1eeb \u0111\u00f3, s\u1ef1 s\u1ed1ng trong t\u1ef1 nhi\u00ean lu\u00f4n lu\u00f4n \u0111\u01b0\u1ee3c t\u1ed3n t\u1ea1i \u1edf h\u00ecnh th\u1ee9c b\u1ea3o t\u1ed3n theo quy lu\u1eadt sinh h\u00f3a, ph\u00e1t tri\u1ec3n v\u00e0 t\u1ed3n t\u1ea1i c\u1ee7a m\u1ecdi s\u1ef1 v\u1eadt trong \u0111a d\u1ea1ng sinh h\u1ecdc.<\/span><\/p>\n

Tuy nhi\u00ean, v\u1eabn c\u00f2n nhi\u1ec1u y\u1ebfu t\u1ed1 kh\u00e1c th\u01b0\u1eddng c\u1ee7a s\u1ef1 s\u1ed1ng trong t\u1ef1 nhi\u00ean khi c\u00f3 nh\u1eefng sinh v\u1eadt \u0111\u01b0\u1ee3c sinh ra r\u1ed3i l\u1ea1i b\u1ecb tuy\u1ec7t ch\u1ee7ng theo th\u1eddi gian (Theo s\u00e1ch \u0110\u1ecf c\u1ee7a Hi\u1ec7p h\u1ed9i qu\u1ed1c t\u1ebf v\u1ec1 B\u1ea3o t\u1ed3n Thi\u00ean nhi\u00ean (IUCN) c\u00f4ng b\u1ed1 n\u0103m 2008, k\u1ec3 t\u1eeb n\u0103m 1500 \u0111\u00e3 c\u00f3 h\u01a1n 860 lo\u00e0i \u0111\u1ed9ng th\u1ef1c v\u1eadt hoang d\u00e3 b\u1ecb tuy\u1ec7t ch\u1ee7ng ho\u1eb7c bi\u1ebfn m\u1ea5t trong t\u1ef1 nhi\u00ean). \u0110\u1ed3ng th\u1eddi \u1edf t\u1eebng th\u1eddi k\u1ef3 c\u1ee7a l\u1ecbch s\u1eed l\u1ea1i xu\u1ea5t hi\u1ec7n th\u00eam nh\u1eefng lo\u00e0i sinh v\u1eadt m\u1edbi m\u00e0 tr\u01b0\u1edbc \u0111\u00e2y ch\u01b0a t\u1eebng c\u00f3, nh\u01b0 hoa \u01afu \u0111\u00e0m t\u1ef1 nhi\u00ean sinh kh\u00f4ng c\u1ea7n b\u1ea5t c\u1ee9 m\u1ed9t y\u1ebfu t\u1ed1 n\u00e0o, sinh tr\u00ean s\u1eaft, sinh tr\u00ean nh\u1ef1a, sinh tr\u00ean m\u1ecdi n\u01a1i, tr\u00ean m\u1ecdi ch\u1ea5t li\u1ec7u, hay nh\u01b0 m\u1ed9t s\u1ed1 c\u00e1c lo\u1ea1i vi r\u00fat ch\u01b0a t\u1eebng bi\u1ebft \u0111\u1ebfn xu\u1ea5t hi\u1ec7n ng\u00e0y c\u00e0ng nhi\u1ec1u \u0111e d\u1ecda t\u00ednh m\u1ea1ng c\u1ee7a con ng\u01b0\u1eddi, v.v\u2026 C\u00e1c hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y kh\u00f4ng theo m\u1ed9t quy lu\u1eadt nh\u1ea5t \u0111\u1ecbnh trong t\u1ed3n t\u1ea1i theo th\u1ebf h\u1ec7.<\/span><\/p>\n

Nh\u01b0 v\u1eady, ch\u00fang ta t\u01b0\u1edfng nh\u01b0 l\u00e0 s\u1ef1 s\u1ed1ng tr\u00ean th\u1ebf gi\u1edbi \u0111\u01b0\u1ee3c b\u1ea3o t\u1ed3n theo th\u1ebf h\u1ec7 m\u1ed9t c\u00e1ch \u0111\u1ed3ng nh\u1ea5t, nh\u01b0ng hi\u1ec7n th\u1ef1c l\u1ea1i kh\u00f4ng ph\u1ea3i nh\u01b0 v\u1eady. C\u1ea7n ph\u1ea3i nh\u1eadn th\u1ee9c r\u1eb1ng, s\u1ef1 s\u1ed1ng trong v\u1eadt ch\u1ea5t kh\u00f4ng ch\u1ec9 h\u1ea1n \u0111\u1ecbnh b\u1edfi v\u1eadt ch\u1ea5t, tinh th\u1ea7n v\u00e0 N\u0103ng l\u01b0\u1ee3ng s\u1ef1 s\u1ed1ng, m\u00e0 trong s\u1ef1 s\u1ed1ng c\u00f2n lu\u00f4n xu\u1ea5t hi\u1ec7n nhi\u1ec1u kh\u1ea3 n\u0103ng kh\u00e1c nhau t\u1eeb kh\u1ea3 n\u0103ng th\u00f4ng th\u01b0\u1eddng \u0111\u1ebfn kh\u1ea3 n\u0103ng si\u00eau ph\u00e0m c\u1ee7a con ng\u01b0\u1eddi. M\u1eb7c d\u00f9 h\u00ecnh th\u1ee9c c\u1ee7a s\u1ef1 s\u1ed1ng b\u1ec1 ngo\u00e0i th\u1ea5y \u0111\u01b0\u1ee3c l\u00e0 nh\u01b0 v\u1eady, nh\u01b0ng b\u1ea3n ch\u1ea5t t\u1ed3n t\u1ea1i c\u1ee7a s\u1ef1 s\u1ed1ng trong t\u1ef1 nhi\u00ean v\u1eabn c\u00f2n l\u00e0 m\u1ed9t \u0111i\u1ec1u b\u00ed m\u1eadt m\u00e0 con ng\u01b0\u1eddi ch\u01b0a th\u1ec3 kh\u00e1m ph\u00e1.<\/span><\/p>\n

V\u1eady c\u00e1i g\u00ec t\u00e1c \u0111\u1ed9ng cho s\u1ef1 s\u1ed1ng t\u1ed3n t\u1ea1i?<\/em><\/strong><\/span><\/p>\n

N\u1ebfu ch\u1ec9 quan s\u00e1t b\u1eb1ng c\u00e1c gi\u00e1c quan th\u00f4ng th\u01b0\u1eddng hay b\u1eb1ng c\u00e1c nghi\u00ean c\u1ee9u khoa h\u1ecdc th\u00ec th\u1ea5y r\u1eb1ng, s\u1ef1 s\u1ed1ng \u0111\u1ed3ng h\u00e0nh v\u1edbi v\u1eadt ch\u1ea5t. Khi v\u1eadt ch\u1ea5t s\u1ee5p \u0111\u1ed5, s\u1ef1 s\u1ed1ng trong v\u1eadt ch\u1ea5t s\u1ebd b\u1ecb m\u1ea5t hay n\u00f3i c\u00e1ch kh\u00e1c, t\u1ed3n t\u1ea1i c\u1ee7a s\u1ef1 s\u1ed1ng ch\u1ec9 \u0111\u01b0\u1ee3c gi\u1edbi h\u1ea1n khi v\u1eadt ch\u1ea5t t\u1ed3n t\u1ea1i, khi v\u1eadt ch\u1ea5t b\u1ecb ti\u00eau di\u1ec7t th\u00ec s\u1ef1 s\u1ed1ng trong v\u1eadt ch\u1ea5t \u0111\u00f3 kh\u00f4ng c\u00f2n n\u1eefa, n\u00f3 b\u1ecb ti\u00eau di\u1ec7t theo. Tuy nhi\u00ean, s\u1ef1 l\u00fd gi\u1ea3i tr\u00ean kh\u00f4ng ph\u1ea3n \u00e1nh \u0111\u01b0\u1ee3c hi\u1ec7n th\u1ef1c m\u1ed9t c\u00e1ch \u0111\u1ea7y \u0111\u1ee7 v\u00e0 ch\u00e2n th\u1eadt, n\u00ean kh\u00f4ng th\u1ec3 t\u00ecm th\u1ea5y b\u1ea3n ch\u1ea5t t\u1ed3n t\u1ea1i c\u1ee7a s\u1ef1 s\u1ed1ng. Trong th\u1ef1c t\u1ea1i, kh\u00f4ng ph\u1ea3i t\u1ea5t c\u1ea3 m\u1ecdi ho\u1ea1t \u0111\u1ed9ng, m\u1ecdi qu\u00e1 tr\u00ecnh ph\u00e1t tri\u1ec3n v\u00e0 bi\u1ebfn \u0111\u1ed9ng c\u1ee7a con ng\u01b0\u1eddi, c\u1ee7a th\u1ebf gi\u1edbi v\u1ea1n v\u1eadt \u0111\u1ec1u c\u00f3 th\u1ec3 quan s\u00e1t v\u00e0 th\u1ef1c nghi\u1ec7m \u0111\u01b0\u1ee3c. Ch\u00ednh v\u00ec l\u00fd do n\u00e0y m\u00e0 gi\u1edbi khoa h\u1ecdc lu\u00f4n lu\u00f4n ph\u1ea3i ch\u1ea1y theo nghi\u00ean c\u1ee9u c\u00e1c hi\u1ec7n t\u01b0\u1ee3ng k\u1ef3 b\u00ed c\u1ee7a th\u1ebf gi\u1edbi th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n trong t\u1ef1 nhi\u00ean, nh\u01b0ng cu\u1ed1i c\u00f9ng \u0111\u1ec1u ph\u1ea3i d\u1eebng b\u01b0\u1edbc, kh\u00f4ng kh\u00e1m ph\u00e1 \u0111\u01b0\u1ee3c. \u0110\u00e2y ch\u00ednh l\u00e0 nh\u1eefng b\u00ed m\u1eadt c\u1ee7a v\u0169 tr\u1ee5.<\/span><\/p>\n

C\u1ea7n kh\u1eb3ng \u0111\u1ecbnh r\u1eb1ng, b\u1ea3n ch\u1ea5t v\u1ec1 s\u1ef1 s\u1ed1ng v\u00e0 s\u1ef1 t\u1ed3n t\u1ea1i c\u1ee7a s\u1ef1 s\u1ed1ng s\u1ebd kh\u00f4ng th\u1ec3 gi\u1ea3i th\u00edch \u0111\u01b0\u1ee3c n\u1ebfu kh\u00f4ng nh\u1eadn th\u1ee9c \u0111\u01b0\u1ee3c v\u1ec1 m\u1ed9t th\u1ebf gi\u1edbi b\u00ed m\u1eadt kh\u00e1c t\u1ed3n t\u1ea1i song song v\u1edbi th\u1ebf gi\u1edbi v\u1eadt ch\u1ea5t. \u0110\u00f3 l\u00e0 th\u1ebf gi\u1edbi si\u00eau h\u00ecnh – <\/em><\/strong>ch\u1ee7 th\u1ec3 t\u1ea1o sinh th\u1ebf gi\u1edbi v\u1eadt ch\u1ea5t, t\u1ed3n t\u1ea1i cho th\u1ebf gi\u1edbi v\u1eadt ch\u1ea5t v\u00e0 t\u1ed3n t\u1ea1i ngay c\u1ea3 sau khi v\u1eadt ch\u1ea5t s\u1ee5p \u0111\u1ed5.<\/span><\/p>\n

V\u00ec s\u1ef1 s\u1ed1ng c\u1ee7a v\u1eadt ch\u1ea5t \u0111\u01b0\u1ee3c c\u1ea5u th\u00e0nh b\u1edfi n\u0103ng l\u01b0\u1ee3ng \u0111\u1eb7c bi\u1ec7t c\u1ee7a v\u0169 tr\u1ee5, n\u00ean b\u1ea3n ch\u1ea5t s\u1ef1 t\u1ed3n t\u1ea1i c\u1ee7a s\u1ef1 s\u1ed1ng c\u1ea7n \u0111\u01b0\u1ee3c nh\u1eadn th\u1ee9c theo c\u00e1ch ti\u1ebfp c\u1eadn kh\u00e1c. \u0110\u00e2y kh\u00f4ng ph\u1ea3i l\u00e0 n\u0103ng l\u01b0\u1ee3ng th\u00f4ng th\u01b0\u1eddng, m\u00e0 l\u00e0 Th\u1ea7n l\u1ef1c c\u1ee7a si\u00eau nhi\u00ean. Th\u1ea7n l\u1ef1c n\u00e0y c\u00f3 t\u01b0 duy. N\u0103ng l\u01b0\u1ee3ng Th\u1ea7n l\u1ef1c c\u00f3 t\u01b0 duy n\u00e0y t\u1ef1 v\u1eadn \u0111\u1ed9ng chuy\u1ec3n h\u00f3a \u0111\u1ed9c l\u1eadp trong qu\u00e1 tr\u00ecnh sinh h\u00f3a, ph\u00e1t tri\u1ec3n v\u00e0 t\u1ed3n t\u1ea1i v\u1eadt ch\u1ea5t. N\u00f3 kh\u00f4ng t\u00e1c \u0111\u1ed9ng t\u01b0\u01a1ng t\u00e1c hay h\u00f2a nh\u1eadp v\u1edbi b\u1ea5t c\u1ee9 m\u1ed9t n\u0103ng l\u01b0\u1ee3ng n\u00e0o, hay v\u1edbi b\u1ea5t c\u1ee9 th\u00e0nh ph\u1ea7n n\u00e0o trong kh\u00f4ng gian \u0111\u1ec3 c\u00f9ng c\u1ea5u th\u00e0nh v\u1eadt ch\u1ea5t nh\u01b0 c\u00e1c n\u0103ng l\u01b0\u1ee3ng thu\u1ea7n t\u00fay. T\u1ea5t c\u1ea3 n\u0103ng l\u01b0\u1ee3ng trong t\u1ef1 nhi\u00ean \u0111\u1ec1u l\u00e0 s\u1ea3n ph\u1ea9m \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1edfi n\u0103ng l\u01b0\u1ee3ng n\u00e0y. T\u1eeb khi v\u1ea1n v\u1eadt trong \u0111a d\u1ea1ng sinh h\u1ecdc ch\u01b0a xu\u1ea5t hi\u1ec7n trong th\u1ebf gi\u1edbi t\u1ef1 nhi\u00ean, th\u00ec N\u0103ng l\u01b0\u1ee3ng s\u1ef1 s\u1ed1ng \u0111\u00e3 \u0111\u01b0\u1ee3c xu\u1ea5t hi\u1ec7n v\u00e0 t\u1eeb N\u0103ng l\u01b0\u1ee3ng s\u1ef1 s\u1ed1ng n\u00e0y m\u1edbi ho\u1ea1t \u0111\u1ed9ng t\u1ea1o t\u00e1c, sinh ra v\u1ea1n v\u1eadt trong th\u1ebf gi\u1edbi t\u1ef1 nhi\u00ean.<\/span><\/p>\n

Do \u0111\u00f3, s\u1ef1 s\u1ed1ng trong v\u1eadt ch\u1ea5t t\u1ed3n t\u1ea1i d\u01b0\u1edbi d\u1ea1ng n\u0103ng l\u01b0\u1ee3ng v\u1eeba h\u1eefu c\u01a1, v\u1eeba \u0111\u1ed9c l\u1eadp v\u1edbi v\u1eadt ch\u1ea5t. S\u1ef1 s\u1ed1ng g\u1eafn k\u1ebft h\u1eefu c\u01a1 v\u1edbi v\u1eadt ch\u1ea5t \u1edf qu\u00e1 tr\u00ecnh v\u1eadn \u0111\u1ed9ng, ph\u00e1t tri\u1ec3n v\u1eadt ch\u1ea5t, nh\u01b0ng n\u00f3 c\u0169ng \u0111\u1ed9c l\u1eadp v\u1edbi v\u1eadt ch\u1ea5t v\u00e0 c\u00f3 th\u1ec3 t\u00e1ch r\u1eddi v\u1eadt ch\u1ea5t b\u1ea5t c\u1ee9 l\u00fac n\u00e0o. M\u1ed7i khi N\u0103ng l\u01b0\u1ee3ng s\u1ef1 s\u1ed1ng t\u00e1ch r\u1eddi kh\u1ecfi v\u1eadt ch\u1ea5t, th\u00ec v\u1eadt ch\u1ea5t s\u1ebd b\u1ecb ti\u00eau di\u1ec7t v\u00e0 s\u1ee5p \u0111\u1ed5 v\u00ec v\u1eadt ch\u1ea5t ch\u1ec9 l\u00e0 c\u00e1i s\u1ea3n ph\u1ea9m c\u1ee7a N\u0103ng l\u01b0\u1ee3ng si\u00eau nhi\u00ean.<\/span><\/p>\n

Nh\u01b0 v\u1eady, v\u1ea5n \u0111\u1ec1 t\u1ed3n t\u1ea1i s\u1ef1 s\u1ed1ng trong t\u1ef1 nhi\u00ean n\u00e0y kh\u00f4ng ph\u1ea3i l\u00e0 t\u1ed3n t\u1ea1i theo h\u1ea1n \u0111\u1ecbnh c\u1ee7a v\u1eadt ch\u1ea5t, m\u00e0 khi v\u1eadt ch\u1ea5t b\u1ecb ti\u00eau di\u1ec7t v\u00e0 m\u1ea5t \u0111i th\u00ec s\u1ef1 s\u1ed1ng v\u1eabn t\u1ed3n t\u1ea1i d\u01b0\u1edbi d\u1ea1ng n\u0103ng l\u01b0\u1ee3ng. N\u0103ng l\u01b0\u1ee3ng s\u1ef1 s\u1ed1ng \u0111\u01b0\u1ee3c t\u00e1ch r\u1eddi ra ngo\u00e0i v\u00e0 t\u1ed3n t\u1ea1i trong kh\u00f4ng gian kh\u00f4ng bao gi\u1edd m\u1ea5t \u0111i b\u1edfi n\u0103ng l\u01b0\u1ee3ng th\u1ea7n l\u1ef1c c\u1ee7a v\u0169 tr\u1ee5 l\u00e0 b\u1ea5t bi\u1ebfn, v\u0129nh h\u1eb1ng.<\/span><\/p>\n

S\u1ef1 s\u1ed1ng \u0111\u01b0\u1ee3c c\u1ea5u th\u00e0nh b\u1edfi 3 y\u1ebfu t\u1ed1. Th\u1ee9 nh\u1ea5t l\u00e0 v\u1eadt ch\u1ea5t c\u1ee7a s\u1ef1 v\u1eadt. Th\u1ee9 hai l\u00e0 N\u0103ng l\u01b0\u1ee3ng s\u1ef1 s\u1ed1ng v\u00e0 n\u0103ng l\u01b0\u1ee3ng tinh th\u1ea7n c\u1ee7a s\u1ef1 v\u1eadt. Th\u1ee9 ba l\u00e0 n\u0103ng l\u01b0\u1ee3ng si\u00eau nhi\u00ean t\u00e1c \u0111\u1ed9ng cho qu\u00e1 tr\u00ecnh sinh h\u00f3a, ph\u00e1t tri\u1ec3n v\u00e0 t\u1ed3n t\u1ea1i c\u1ee7a s\u1ef1 v\u1eadt. Do \u0111\u00f3, s\u1ef1 s\u1ed1ng ch\u1ec9 l\u00e0 c\u00e1i s\u1ea3n ph\u1ea9m \u0111\u01b0\u1ee3c t\u1ea1o ra v\u00e0 xu\u1ea5t hi\u1ec7n tr\u00ean th\u1ebf gi\u1edbi b\u1edfi s\u1ef1 t\u00e1c \u0111\u1ed9ng t\u1ea1o h\u00f3a c\u1ee7a n\u0103ng l\u01b0\u1ee3ng si\u00eau nhi\u00ean trong v\u0169 tr\u1ee5.<\/span><\/p>\n

Tuy nhi\u00ean, cho \u0111\u1ebfn nay c\u00e1c nghi\u00ean c\u1ee9u khoa h\u1ecdc c\u0169ng nh\u01b0 c\u00e1c tri\u1ebft thuy\u1ebft ch\u01b0a th\u1ec3 kh\u00e1m ph\u00e1 \u0111\u01b0\u1ee3c b\u00ed m\u1eadt t\u1ed3n t\u1ea1i s\u1ef1 s\u1ed1ng trong \u0111a d\u1ea1ng sinh h\u1ecdc c\u1ee7a t\u1ef1 nhi\u00ean, b\u1edfi \u0111\u00e2y l\u00e0 m\u1ed9t b\u00ed m\u1eadt c\u1ee7a v\u0169 tr\u1ee5 ti\u1ec1m \u1ea9n trong m\u1ecdi s\u1ef1 v\u1eadt. Ch\u1ec9 nh\u1eefng ng\u01b0\u1eddi c\u00f3 tr\u1ef1c gi\u00e1c hay to\u00e0n gi\u00e1c c\u1ea3m nh\u1eadn \u0111\u01b0\u1ee3c hi\u1ec7n th\u1ef1c c\u1ee7a b\u1ea3n th\u00e2n c\u0169ng nh\u01b0 th\u1ea5y r\u00f5 b\u00ed m\u1eadt n\u00e0y trong m\u1ecdi s\u1ef1 v\u1eadt, nh\u01b0 c\u00e1c th\u00e1nh nh\u00e2n, nh\u1eefng ng\u01b0\u1eddi xu\u1ea5t ch\u00fang, nh\u1eefng v\u1ecb gi\u00e1o ch\u1ee7 l\u1eadp ra c\u00e1c t\u00f4n gi\u00e1o, nh\u1eefng nh\u00e0 tri\u1ebft h\u1ecdc duy t\u00e2m, v.v\u2026 th\u00ec m\u1edbi c\u00f3 th\u1ec3 ch\u1ec9 ra \u0111\u01b0\u1ee3c t\u00ednh ch\u00e2n th\u1eadt c\u1ee7a qu\u00e1 tr\u00ecnh t\u1ed3n t\u1ea1i s\u1ef1 s\u1ed1ng trong t\u1ef1 nhi\u00ean. Nh\u01b0ng h\u1ecd kh\u00f4ng  ch\u1ec9 th\u1eb3ng b\u1eb1ng m\u1ed9t bi\u1ec7n ch\u1ee9ng c\u1ee5 th\u1ec3 \u0111\u1ec3 nh\u00e2n lo\u1ea1i th\u1ea5y \u0111\u01b0\u1ee3c v\u00e0 n\u1ebfu khi c\u00f3 ch\u1ec9 ra s\u1ef1 th\u1eadt c\u1ee7a t\u1ed3n t\u1ea1i, th\u00ec c\u0169ng \u1edf d\u01b0\u1edbi d\u1ea1ng si\u00eau ng\u00f4n ng\u1eef kh\u00f3 hi\u1ec3u v\u00ec \u0111\u00e2y l\u00e0 m\u1ed9t b\u00ed m\u1eadt c\u1ee7a v\u0169 tr\u1ee5.<\/span><\/p>\n

Cho \u0111\u1ebfn ng\u00e0y nay th\u1ebf gi\u1edbi lo\u00e0i ng\u01b0\u1eddi v\u1eabn \u0111ang t\u00ecm ki\u1ebfm v\u1ec1 qu\u00e1 tr\u00ecnh t\u1ed3n t\u1ea1i trong th\u1ebf gi\u1edbi t\u1ef1 nhi\u00ean. \u0110\u00e3 c\u00f3 r\u1ea5t nhi\u1ec1u l\u00fd thuy\u1ebft kh\u00e1c nhau \u0111\u01b0\u1ee3c \u0111\u01b0a ra. C\u00f3 l\u00fd thuy\u1ebft cho r\u1eb1ng, con ng\u01b0\u1eddi ch\u00fang ta sau khi ch\u1ebft linh h\u1ed3n v\u1eabn t\u1ed3n t\u1ea1i, nh\u01b0ng c\u0169ng c\u00f3 nh\u1eefng l\u00fd thuy\u1ebft v\u00e0 nghi\u00ean c\u1ee9u khoa h\u1ecdc cho r\u1eb1ng, khi v\u1eadt ch\u1ea5t m\u1ea5t \u0111i th\u00ec s\u1ef1 s\u1ed1ng k\u1ebft th\u00fac v\u00e0 th\u1ebf gi\u1edbi t\u1ef1 nhi\u00ean t\u1ed3n t\u1ea1i d\u01b0\u1edbi h\u00ecnh th\u1ee9c b\u1ea3o t\u1ed3n theo th\u1ebf h\u1ec7.<\/span><\/p>\n

Nh\u1eadn th\u1ee9c \u0111\u00fang v\u1ec1 qu\u00e1 tr\u00ecnh t\u1ed3n t\u1ea1i c\u1ee7a s\u1ef1 s\u1ed1ng trong th\u1ebf gi\u1edbi t\u1ef1 nhi\u00ean nh\u01b0 ch\u00fang ta \u0111ang th\u1ea5y trong th\u1ef1c t\u1ea1i th\u00ec th\u1ea5y r\u1eb1ng, t\u00ednh ch\u00e2n th\u1eadt c\u1ee7a s\u1ef1 t\u1ed3n t\u1ea1i \u0111\u01b0\u1ee3c di\u1ec5n ra \u1edf 2 h\u00ecnh th\u1ee9c: H\u00ecnh th\u1ee9c b\u1ea3o t\u1ed3n theo th\u1ebf h\u1ec7 v\u00e0 h\u00ecnh th\u1ee9c t\u00e1i sinh c\u1ee7a n\u0103ng l\u01b0\u1ee3ng s\u1ef1 s\u1ed1ng.<\/span><\/p>\n

H\u00ecnh th\u1ee9c t\u1ed3n t\u1ea1i th\u1ee9 nh\u1ea5t – B\u1ea3o t\u1ed3n theo th\u1ebf h\u1ec7<\/em><\/strong><\/span><\/p>\n

Trong qu\u00e1 tr\u00ecnh sinh h\u00f3a, ph\u00e1t tri\u1ec3n v\u00e0 t\u1ed3n t\u1ea1i, v\u1ea1n v\u1eadt mang s\u1ef1 s\u1ed1ng kh\u00f4ng t\u1ed3n t\u1ea1i v\u0129nh h\u1eb1ng, m\u00e0 ch\u00fang ch\u1ec9 \u0111\u01b0\u1ee3c t\u1ed3n t\u1ea1i trong m\u1ed9t kho\u1ea3ng th\u1eddi gian nh\u1ea5t \u0111\u1ecbnh theo kh\u1ea3 n\u0103ng v\u1eadn \u0111\u1ed9ng c\u1ee7a n\u0103ng l\u01b0\u1ee3ng s\u1ef1 s\u1ed1ng. Ph\u1ea1m tr\u00f9 sinh theo quy lu\u1eadt t\u1ed3n t\u1ea1i c\u1ee7a th\u1ebf gi\u1edbi l\u00e0 b\u1ed1 m\u1eb9 sinh ra con, con l\u1ea1i ti\u1ebfp t\u1ee5c sinh ra con n\u1eefa, li\u00ean ti\u1ebfp t\u1eeb th\u1ebf h\u1ec7 n\u00e0y qua th\u1ebf h\u1ec7 kh\u00e1c \u0111\u1ec3 tr\u1edf th\u00e0nh m\u1ed9t qu\u00e1 tr\u00ecnh t\u1ed3n t\u1ea1i c\u1ee7a nh\u00e2n lo\u1ea1i mang t\u00ednh di truy\u1ec1n theo nguy\u00ean t\u1eafc c\u1ee7a lo\u00e0i. Lo\u00e0i n\u00e0o sanh ra lo\u00e0i \u0111\u00f3. Ch\u1ee7ng lo\u00e0i n\u00e0o th\u00ec nguy\u00ean ch\u1ee7ng lo\u00e0i \u0111\u00f3. S\u1ef1 v\u1eadt \u0111\u01b0\u1ee3c b\u1ea3o t\u1ed3n trong qu\u00e1 tr\u00ecnh v\u1eadn \u0111\u1ed9ng sinh di\u1ec7t mang t\u00ednh di truy\u1ec1n theo m\u1ed9t d\u00f2ng l\u01b0u chuy\u1ec3n c\u1ee7a ch\u00fang trong c\u00f9ng ch\u1ee7ng lo\u00e0i. \u0110\u00e2y l\u00e0 sinh theo nguy\u00ean t\u1eafc c\u1ee7a quy lu\u1eadt t\u1ed3n t\u1ea1i \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng theo Lu\u1eadt nh\u00e2n qu\u1ea3 c\u1ee7a th\u1ebf gi\u1edbi. Quy lu\u1eadt nh\u00e2n qu\u1ea3 quy\u1ebft \u0111\u1ecbnh cho s\u1ef1 t\u1ed3n t\u1ea1i c\u1ee7a v\u1eadt ch\u1ea5t theo \u0111\u1ecbnh m\u1ec7nh c\u1ee7a m\u1ed7i s\u1ef1 v\u1eadt t\u01b0\u01a1ng \u1ee9ng v\u1edbi th\u1eddi gian. Do \u0111\u00f3, c\u00e1c lo\u00e0i trong t\u1ef1 nhi\u00ean \u0111\u01b0\u1ee3c t\u1ed3n t\u1ea1i kh\u00f4ng c\u00f3 th\u1eddi gian \u0111\u1ed3ng nh\u1ea5t. C\u00f3 nh\u1eefng lo\u00e0i \u0111\u01b0\u1ee3c t\u1ed3n t\u1ea1i v\u1edbi th\u1eddi gian r\u1ea5t ng\u1eafn, nh\u01b0ng c\u00f3 nh\u1eefng lo\u00e0i \u0111\u01b0\u1ee3c t\u1ed3n t\u1ea1i v\u1edbi th\u1eddi gian d\u00e0i h\u01a1n trong th\u1ef1c t\u1ea1i, b\u1edfi s\u1ef1 t\u1ed3n t\u1ea1i n\u00e0y \u0111\u01b0\u1ee3c quy\u1ebft \u0111\u1ecbnh b\u1eb1ng t\u01b0 duy c\u1ee7a n\u0103ng l\u01b0\u1ee3ng Th\u1ea7n l\u1ef1c si\u00eau nhi\u00ean m\u00e0 con ng\u01b0\u1eddi ch\u00fang ta kh\u00f4ng th\u1ec3 quan s\u00e1t \u0111\u01b0\u1ee3c. Qu\u00e1 tr\u00ecnh sinh h\u00f3a, t\u1ed3n t\u1ea1i v\u00e0 ph\u00e1t tri\u1ec3n c\u1ee7a th\u1ebf gi\u1edbi t\u1ef1 nhi\u00ean \u0111\u01b0\u1ee3c c\u00e1i t\u01b0 duy n\u00e0y quy \u0111\u1ecbnh theo quy lu\u1eadt nh\u00e2n qu\u1ea3. M\u1ed7i th\u1ebf gi\u1edbi trong v\u0169 tr\u1ee5 \u0111\u1ec1u \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng theo m\u1ed9t quy lu\u1eadt ph\u00e1t tri\u1ec3n ri\u00eang bi\u1ec7t, trong \u0111\u00f3 \u1edf tr\u00e1i \u0111\u1ea5t s\u1ef1 s\u1ed1ng trong t\u1ef1 nhi\u00ean \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng theo quy lu\u1eadt t\u1ed3n t\u1ea1i m\u00e0 ch\u00fang ta \u0111ang nh\u00ecn th\u1ea5y. T\u1eebng giai \u0111o\u1ea1n l\u1ecbch s\u1eed c\u1ee7a s\u1ef1 s\u1ed1ng tr\u00ean th\u1ebf gi\u1edbi n\u00e0y \u0111\u1ec1u \u0111\u01b0\u1ee3c t\u1ed3n t\u1ea1i theo quy lu\u1eadt nh\u00e2n qu\u1ea3 m\u00e0 v\u0169 tr\u1ee5 \u0111\u00e3 \u00e1p \u0111\u1eb7t. T\u1eeb Lu\u1eadt nh\u00e2n qu\u1ea3 n\u00e0y s\u1ebd di\u1ec5n ra c\u00e1c bi\u1ebfn \u0111\u1ed9ng m\u00e0 m\u1ecdi s\u1ef1 v\u1eadt c\u00f3 th\u1ec3 b\u1ecb tri\u1ec7t ti\u00eau, c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c sinh m\u1edbi \u1edf nh\u1eefng giai \u0111o\u1ea1n kh\u00e1c nhau theo l\u1ecbch s\u1eed th\u1ebf gi\u1edbi.<\/span><\/p>\n

Nh\u01b0 v\u1eady, th\u1ebf gi\u1edbi v\u1ea1n v\u1eadt lu\u00f4n lu\u00f4n t\u1ed3n t\u1ea1i, t\u1ef1 nhi\u00ean lu\u00f4n lu\u00f4n t\u1ed3n t\u1ea1i, nh\u01b0ng n\u00f3 t\u1ed3n t\u1ea1i theo quy lu\u1eadt t\u1ef1 nhi\u00ean \u1edf h\u00ecnh th\u1ee9c b\u1ea3o t\u1ed3n. S\u1ef1 t\u1ed3n t\u1ea1i c\u1ee7a t\u1ef1 nhi\u00ean kh\u00f4ng ph\u1ea3i l\u00e0 ng\u1eabu nhi\u00ean, kh\u00f4ng ph\u1ea3i l\u00e0 t\u1ef1 nhi\u00ean m\u00e0 \u0111\u00f3 l\u00e0 s\u1ef1 s\u1eafp \u0111\u1eb7t c\u00f3 t\u01b0 duy c\u1ee7a \u0110\u1ea5ng si\u00eau nhi\u00ean trong v\u0169 tr\u1ee5 n\u00e0y.<\/span><\/p>\n

H\u00ecnh th\u1ee9c t\u1ed3n t\u1ea1i th\u1ee9 2 – T\u00e1i sinh c\u1ee7a N\u0103ng l\u01b0\u1ee3ng s\u1ef1 s\u1ed1ng <\/em><\/strong>(\u0110\u00e2y l\u00e0 b\u1ea3n ch\u1ea5t c\u1ee7a s\u1ef1 t\u1ed3n t\u1ea1i)<\/span><\/p>\n

B\u1edfi N\u0103ng l\u01b0\u1ee3ng s\u1ef1 s\u1ed1ng l\u00e0 c\u00e1i \u0111\u01b0\u1ee3c t\u1ea1o ra t\u1eeb N\u0103ng l\u01b0\u1ee3ng si\u00eau nhi\u00ean, m\u00e0 N\u0103ng l\u01b0\u1ee3ng si\u00eau nhi\u00ean l\u00e0 v\u0129nh h\u1eb1ng, b\u1ea5t bi\u1ebfn, n\u00ean S\u1ef1 s\u1ed1ng lu\u00f4n lu\u00f4n \u0111\u01b0\u1ee3c t\u1ed3n t\u1ea1i cho d\u00f9 v\u1eadt ch\u1ea5t b\u1ecb ti\u00eau di\u1ec7t.<\/span><\/p>\n

Khi v\u1eadt ch\u1ea5t b\u1ecb ti\u00eau di\u1ec7t, s\u1ee5p \u0111\u1ed5, s\u1ef1 s\u1ed1ng t\u00e1ch r\u1eddi ra ngo\u00e0i v\u00e0 t\u1ed3n t\u1ea1i trong kh\u00f4ng gian. N\u0103ng l\u01b0\u1ee3ng s\u1ef1 s\u1ed1ng \u0111\u01b0\u1ee3c b\u1ea3o t\u1ed3n c\u1ee7a Th\u1ea7n l\u1ef1c si\u00eau nhi\u00ean v\u1eabn c\u00f2n t\u1ed3n t\u1ea1i v\u00e0 \u0111\u1ebfn m\u1ed9t th\u1eddi \u0111i\u1ec3m nh\u1ea5t \u0111\u1ecbnh, N\u0103ng l\u01b0\u1ee3ng s\u1ef1 s\u1ed1ng n\u00e0y t\u00e1i sinh sang m\u1ed9t v\u1eadt ch\u1ea5t  kh\u00e1c l\u00e0 b\u1edfi Th\u1ea7n l\u1ef1c si\u00eau nhi\u00ean t\u1ea1o h\u00f3a kh\u1edfi sinh ra v\u1eadt ch\u1ea5t m\u1edbi. S\u1ef1 s\u1ed1ng v\u1eadt ch\u1ea5t m\u1edbi \u0111\u00f3 v\u1eabn l\u00e0 c\u00e1i tinh th\u1ea7n c\u1ee7a v\u1eadt ch\u1ea5t c\u0169.<\/span><\/p>\n

Nh\u01b0 v\u1eady, \u1edf th\u1eddi \u0111i\u1ec3m n\u00e0y N\u0103ng l\u01b0\u1ee3ng s\u1ef1 s\u1ed1ng s\u1ebd sinh ra v\u1eadt ch\u1ea5t n\u00e0y v\u00e0 \u1edf m\u1ed9t th\u1eddi \u0111i\u1ec3m kh\u00e1c c\u0169ng ch\u00ednh N\u0103ng l\u01b0\u1ee3ng s\u1ef1 s\u1ed1ng \u0111\u00f3 s\u1ebd sinh ra v\u1eadt ch\u1ea5t kh\u00e1c. V\u00e0 c\u1ee9 nh\u01b0 v\u1eady, qua c\u00e1c th\u1eddi k\u1ef3 c\u1ee7a th\u1ebf gi\u1edbi t\u1ef1 nhi\u00ean, s\u1ef1 s\u1ed1ng lu\u00f4n lu\u00f4n t\u1ed3n t\u1ea1i, c\u00e1c lo\u00e0i v\u1eadt c\u00f3 s\u1ef1 s\u1ed1ng lu\u00f4n lu\u00f4n \u0111\u01b0\u1ee3c sinh ra \u1edf h\u00ecnh th\u1ee9c t\u00e1i sinh kh\u00f4ng ph\u1ea3i l\u00e0 b\u1ea3o t\u1ed3n theo th\u1ebf h\u1ec7.<\/em> V\u00ed d\u1ee5, hi\u1ec7n nay s\u1ef1 s\u1ed1ng c\u1ee7a m\u1ed9t s\u1ef1 v\u1eadt \u1edf th\u1eddi \u0111i\u1ec3m n\u00e0y g\u1ecdi l\u00e0 A, nh\u01b0ng khi A b\u1ecb ti\u00eau di\u1ec7t th\u00ec s\u1ef1 s\u1ed1ng t\u00e1ch r\u1eddi ra ngo\u00e0i, t\u1ed3n t\u1ea1i trong kh\u00f4ng gian v\u00e0 \u0111\u1ebfn m\u1ed9t th\u1eddi \u0111i\u1ec3m kh\u00e1c N\u0103ng l\u01b0\u1ee3ng s\u1ef1 s\u1ed1ng n\u00e0y ho\u1ea1t \u0111\u1ed9ng sinh h\u00f3a, t\u1ea1o t\u00e1c v\u00e0 ph\u00e1t tri\u1ec3n ra m\u1ed9t s\u1ef1 v\u1eadt kh\u00e1c g\u1ecdi l\u00e0 B. Do \u0111\u00f3, s\u1ef1 t\u1ed3n t\u1ea1i c\u1ee7a s\u1ef1 s\u1ed1ng kh\u00f4ng nh\u1ea5t thi\u1ebft ch\u1ec9 \u1edf m\u1ed9t s\u1ef1 v\u1eadt c\u00f3 s\u1ef1 s\u1ed1ng, m\u00e0 N\u0103ng l\u01b0\u1ee3ng s\u1ef1 s\u1ed1ng ri\u00eang bi\u1ec7t c\u1ee7a v\u1eadt ch\u1ea5t \u0111\u00f3 \u1edf th\u1eddi \u0111i\u1ec3m n\u00e0y n\u00f3 ph\u00e1t tri\u1ec3n s\u1ef1 s\u1ed1ng trong v\u1eadt ch\u1ea5t A, nh\u01b0ng c\u0169ng N\u0103ng l\u01b0\u1ee3ng s\u1ef1 s\u1ed1ng \u0111\u00f3 \u1edf th\u1eddi \u0111i\u1ec3m kh\u00e1c s\u1ebd ph\u00e1t tri\u1ec3n s\u1ef1 s\u1ed1ng trong v\u1eadt ch\u1ea5t B sau khi v\u1eadt ch\u1ea5t A b\u1ecb ti\u00eau di\u1ec7t.<\/em><\/strong><\/span><\/p>\n

Nh\u01b0 v\u1eady, s\u1ef1 s\u1ed1ng kh\u00f4ng t\u1ed3n t\u1ea1i \u1edf h\u00ecnh th\u1ee9c b\u1ea3o t\u1ed3n theo th\u1ebf h\u1ec7 m\u00e0 t\u1ed3n t\u1ea1i \u1edf h\u00ecnh th\u1ee9c c\u00f3 ch\u1ee7 th\u1ec3 t\u1ea1o h\u00f3a sinh m\u1edbi. S\u1ef1 sinh h\u00f3a c\u1ee7a v\u1ea1n v\u1eadt l\u00e0 c\u00e1i sinh h\u00f3a c\u1ee7a ch\u1ee7 th\u1ec3, \u0111\u00f3 l\u00e0 c\u00e1i Th\u1ef1c th\u1ec3 c\u1ee7a v\u0169 tr\u1ee5. S\u1ef1 sinh h\u00f3a n\u00e0y di\u1ec5n ra theo m\u1ed9t nguy\u00ean t\u1eafc  ho\u00e0n to\u00e0n kh\u00e1c. M\u1ed9t v\u1eadt ch\u1ea5t khi m\u1ea5t \u0111i th\u00ec c\u00e1i b\u1ea3n th\u1ec3 s\u1ef1 s\u1ed1ng c\u1ee7a n\u00f3, t\u1ee9c l\u00e0 b\u1ea3n th\u1ec3 c\u1ee7a v\u0169 tr\u1ee5 trong v\u1eadt ch\u1ea5t n\u00e0y v\u1eabn t\u1ed3n t\u1ea1i v\u00e0 chuy\u1ec3n \u0111\u1ebfn sinh ra m\u1ed9t v\u1eadt ch\u1ea5t kh\u00e1c \u1edf c\u00f9ng ho\u1eb7c kh\u00e1c lo\u00e0i. C\u00e1i b\u1ea3n th\u1ec3 c\u1ee7a v\u1eadt ch\u1ea5t l\u00e0 b\u1ea5t bi\u1ebfn, nh\u01b0ng trong qu\u00e1 tr\u00ecnh t\u1ea1o h\u00f3a, sinh h\u00f3a, n\u00f3 bi\u1ebfn h\u00f3a \u0111a d\u1ea1ng, kh\u00f4ng \u1ed5n \u0111\u1ecbnh theo m\u1ed9t ch\u1ee7ng lo\u00e0i. Khi m\u1ed9t c\u00e1 th\u1ec3 c\u1ee7a m\u1ed9t lo\u00e0i n\u00e0o \u0111\u00f3 b\u1ecb ti\u00eau di\u1ec7t, th\u00ec c\u00e1i b\u1ea3n th\u1ec3 s\u1ef1 s\u1ed1ng c\u1ee7a n\u00f3 t\u00e1ch ra b\u00ean ngo\u00e0i v\u00e0 \u0111i v\u00e0o sinh h\u00f3a m\u1ed9t v\u1eadt th\u1ec3 kh\u00e1c c\u00f3 th\u1ec3 l\u00e0 kh\u00e1c lo\u00e0i. Nh\u01b0 th\u1ebf c\u00f3 ngh\u0129a r\u1eb1ng, c\u00e1i th\u1ebf gi\u1edbi v\u1eadt ch\u1ea5t \u0111\u01b0\u1ee3c sinh ra v\u00f4 t\u1eadn, nh\u01b0ng trong c\u00e1i v\u00f4 t\u1eadn \u0111\u00f3 th\u00ec m\u1ed7i c\u00e1 th\u1ec3 n\u1ed1i ti\u1ebfp nhau \u0111\u1ec3 n\u00f3 sinh sinh, h\u00f3a h\u00f3a kh\u00f4ng ng\u1eebng t\u1eeb v\u1eadt n\u00e0y sang v\u1eadt kh\u00e1c. Do v\u1eady, th\u1ebf gi\u1edbi n\u00e0y \u0111\u01b0\u1ee3c t\u1ed3n t\u1ea1i, v\u1ea1n v\u1eadt tr\u00ean th\u1ebf gi\u1edbi n\u00e0y \u0111\u01b0\u1ee3c t\u1ed3n t\u1ea1i theo  m\u1ed9t nguy\u00ean t\u1eafc l\u00e0 v\u1eadn \u0111\u1ed9ng sinh t\u1ed3n c\u1ee7a b\u1ea3n th\u1ec3. Ch\u1ec9 m\u1ed9t b\u1ea3n th\u1ec3 c\u1ee7a m\u1ed9t s\u1ef1 v\u1eadt m\u00e0 c\u00f3 th\u1ec3 l\u01b0u chuy\u1ec3n sinh ra v\u00f4 c\u00f9ng v\u1eadt ch\u1ea5t trong kh\u00f4ng gian v\u00e0 theo th\u1eddi gian, cho n\u00ean qu\u00e1 tr\u00ecnh t\u1ed3n t\u1ea1i c\u1ee7a th\u1ebf gi\u1edbi l\u00e0 lu\u00f4n lu\u00f4n sinh h\u00f3a, lu\u00f4n lu\u00f4n ph\u00e1t tri\u1ec3n v\u00e0 lu\u00f4n lu\u00f4n ti\u00eau di\u1ec7t, nh\u01b0ng b\u1ea3n th\u1ec3 s\u1ef1 s\u1ed1ng trong m\u1ed7i v\u1eadt th\u1ec3 lu\u00f4n sanh sanh, di\u1ec7t di\u1ec7t t\u1eeb v\u1eadt th\u1ec3 n\u00e0y qua v\u1eadt th\u1ec3 kh\u00e1c v\u00f4 c\u00f9ng theo th\u1eddi gian.<\/span><\/p>\n

Ph\u1eadt gi\u00e1o c\u0169ng \u0111\u00e3 \u0111\u1ec1 c\u1eadp \u0111\u1ebfn v\u1ea5n \u0111\u1ec1 n\u00e0y trong Thuy\u1ebft t\u00e1i sinh lu\u00e2n h\u1ed3i.<\/span><\/p>\n

K\u1ebft lu\u1eadn: <\/strong>Nh\u01b0 v\u1eady, trong s\u1ef1 t\u1ed3n t\u1ea1i c\u1ee7a v\u0169 tr\u1ee5 v\u1ea1n v\u1eadt qua c\u00e1c th\u1eddi k\u1ef3 l\u1ecbch s\u1eed, v\u1eadt ch\u1ea5t lu\u00f4n lu\u00f4n \u0111\u01b0\u1ee3c sinh ra, ph\u00e1t tri\u1ec3n v\u00e0 t\u1ed3n t\u1ea1i l\u00e0 do Th\u1ea7n l\u1ef1c t\u01b0 duy c\u1ee7a si\u00eau nhi\u00ean trong v\u0169 tr\u1ee5 th\u01b0\u1eddng xuy\u00ean t\u1ea1o h\u00f3a \u1edf trong m\u1ecdi s\u1ef1 v\u1eadt. Khi s\u1ef1 v\u1eadt n\u00e0y b\u1ecb ti\u00eau di\u1ec7t s\u1ee5p \u0111\u1ed5 th\u00ec b\u1ea3n th\u1ec3 s\u1ef1 s\u1ed1ng v\u1eabn ti\u1ebfp t\u1ee5c t\u1ed3n t\u1ea1i v\u00e0 sinh ra m\u1ed9t s\u1ef1 v\u1eadt kh\u00e1c trong b\u1ea3o t\u1ed3n s\u1ef1 s\u1ed1ng c\u1ee7a \u0111a d\u1ea1ng sinh h\u1ecdc ch\u1ee9 kh\u00f4ng ph\u1ea3i \u1edf h\u00ecnh th\u1ee9c t\u1ed3n t\u1ea1i m\u1eb9 sinh ra con, con sinh ra ch\u00e1u \u0111\u1ec3 t\u1ed3n t\u1ea1i b\u1ea3o t\u1ed3n t\u1ef1 nhi\u00ean theo th\u1ebf h\u1ec7. T\u1ed3n t\u1ea1i c\u1ee7a th\u1ebf gi\u1edbi v\u1eadt ch\u1ea5t l\u00e0 t\u1ed3n t\u1ea1i \u1edf h\u00ecnh th\u1ee9c t\u00e1i sinh c\u1ee7a N\u0103ng l\u01b0\u1ee3ng s\u1ef1 s\u1ed1ng trong ch\u00ednh m\u1ed7i v\u1eadt ch\u1ea5t qua c\u00e1c th\u1eddi k\u1ef3 sanh di\u1ec7t theo th\u1eddi gian.<\/span><\/p>\n

B\u1ea3n ch\u1ea5t th\u1ef1c c\u1ee7a s\u1ef1 t\u1ed3n t\u1ea1i s\u1ef1 s\u1ed1ng trong t\u1ef1 nhi\u00ean \u1edf th\u1ebf gi\u1edbi n\u00e0y l\u00e0 nh\u01b0 v\u1eady. Do \u0111\u00f3, c\u00e1c nghi\u00ean c\u1ee9u khoa h\u1ecdc c\u1ea7n ph\u1ea3i chuy\u1ec3n h\u01b0\u1edbng nghi\u00ean c\u1ee9u v\u00e0o si\u00eau nhi\u00ean v\u01b0\u1ee3t kh\u1ecfi h\u1ea1n \u0111\u1ecbnh v\u1eadt ch\u1ea5t m\u1edbi t\u00ecm \u0111\u1ebfn \u0111\u01b0\u1ee3c s\u1ef1 ch\u00e2n th\u1eadt c\u1ee7a t\u1ed3n t\u1ea1i. N\u1ebfu c\u1ee9 h\u1ea1n \u0111\u1ecbnh \u1edf v\u1eadt ch\u1ea5t v\u00e0 s\u1ef1 s\u1ed1ng c\u1ee7a v\u1eadt ch\u1ea5t theo c\u00e1c hi\u1ec7n t\u01b0\u1ee3ng th\u00f4ng qua quan s\u00e1t v\u00e0 th\u1ef1c nghi\u1ec7m th\u00f4ng th\u01b0\u1eddng th\u00ec m\u1ecdi b\u00ed \u1ea9n c\u1ee7a t\u1ef1 nhi\u00ean, c\u1ee7a s\u1ef1 s\u1ed1ng v\u1eabn l\u00e0 b\u00ed \u1ea9n. Kh\u00f4ng bao gi\u1edd lo\u00e0i ng\u01b0\u1eddi kh\u00e1m ph\u00e1 ra \u0111\u01b0\u1ee3c b\u00ed m\u1eadt t\u1ed3n t\u1ea1i c\u1ee7a s\u1ef1 s\u1ed1ng trong th\u1ebf gi\u1edbi t\u1ef1 nhi\u00ean n\u00e0y.<\/span><\/p>\n

B\u00e0i vi\u1ebft \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n d\u01b0\u1edbi s\u1ef1 h\u01b0\u1edbng d\u1eabn tr\u1ef1c ti\u1ebfp c\u1ee7a Th\u1ea7y Tr\u1ea7n V\u0103n Ph\u00fa (Ch\u00f9a \u0110\u1ed9ng Hang, th\u1ecb x\u00e3 H\u1ed3ng L\u0129nh, t\u1ec9nh H\u00e0 T\u0129nh). Ng\u01b0\u1eddi th\u1ef1c hi\u1ec7n xin tr\u00e2n tr\u1ecdng tri \u00e2n Th\u1ea7y v\u00e0 k\u00ednh mong \u0111\u01b0\u1ee3c Th\u1ea7y, c\u00e1c qu\u00fd ph\u1eadt t\u1eed v\u00e0 b\u1ea1n \u0111\u1ecdc g\u1ea7n xa ch\u1ec9 gi\u00e1o th\u00eam.<\/span><\/p>\n

Ng\u00e0y 26 th\u00e1ng 04 n\u0103m 2018<\/span><\/p>\n

TS. TR\u1ea6N TH\u1eca LAN H\u01af\u01a0NG<\/span><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/article>\n<\/section>\n<\/div>\n<\/section>\n<\/div>\n<\/div>\n